templates/html/html.html
<mjml>
<mj-head>
<mj-title>{{html_title}}</mj-title>
<mj-attributes>
<mj-all font-family="Helvetica, Arial" />
</mj-attributes>
<mj-raw>
<meta name="color-scheme" content="light" />
<meta name="supported-color-schemes" content="light" />
<style type="text/css">
:root {
color-scheme: light;
supported-color-schemes: light;
}
@media (prefers-color-scheme: light) {
background-color: "#1b262c";
}
</style>
</mj-raw>
<mj-preview>{{preheader}}</mj-preview>
</mj-head>
<mj-body background-color="#1b262c" width="100%"> {{&body}} </mj-body>
</mjml>